I keep getting two errors when trying to run a map I made in Portal 2.

1. I get an error that says something about the Entity trigger_catapult was leaked. What does this mean and how do I fix it?

2. I get another error that says it can't find a .prt file. What exactly is a .prt file and how do I make one?

The first error's causing the second error. Go to Map-->Load Pointfile... and a red line will appear in your map in Hammer showing you where there's a leak. Basically it means that there's a hole going from the inside of your map to the outside void. Once you fix it the "no PRT file" issue will go away.

Read this.

And this.

And probably this too.

msleeper wrote:

And probably this too.

That was the first thing I saw when I came to this forum. I've played with Hammer before, so I already know some things, but I never actually made an actual map like I'm trying to do now.